baber/WOPTO huggingface dataset:
Patent GB-1294103-A (GB)
Title: Positive mechanical power transmission system and drive belt therefor
Inventor: MILLER H F
IPC: F16G1/28
Filed: 1969-11-10
Abstract: 1294103 Belt gearing UNIROYAL Inc 10 Nov 1969 [25 Nov 1968] 54883/69 Heading F2Q In a positive drive belt and pulley gear, the belt 10 and a pulley 11 have interengaging teeth 13, 14, the profiles of which are defined principally by circular or approximately circular arcs such that in a photo-elastic model of the belt under rated load, the 1/2 order isochromatic fringe in a belt tooth approximates to the tooth profile. This implies substantially uniform tooth flank loading and an absence of stress concentrations. The belt tooth flanks 19, 20 are circular arcs having their centres of curvature 24, 25 spaced apart on a line P parallel to the tension member 16 of the belt by not more than 20% of the radius of curvature 21, 22 of the flanks. Line P is less than 40% of the tooth height from the tooth base level 17. Root fillets 26, 27 have their centres 30, 31 on a line Q at a distance equal to or less than that of the line P from the base 17. The pulley teeth 14 have a flank radius 41 not more than 10%, and preferably 4%, greater than the radius 22 of the corresponding belt tooth flank. The teeth 14 have tip radii 32, 33 with centres 36, 37 spaced apart by not more than 60% of the radii 32, 33, the fillet radii 28, 29 being less than 95%, and preferably 82% of the tip radii 32, 33 of the pulley teeth 14. An equation is given for the minimum belt tooth width.. The clearance between the tip 23 of a belt tooth 13 and the pulley surface 15 should be not more than 10%, and preferably 2%, of the pulley tooth height. If the belt has a covering jacket, any splice therein should be inclined to the belt edges such that the splice covers at least one, and preferably two tooth pitches.
Patent GB-1454065-A (GB)
Title: Electrical devices containing nitroarylsiloxane dielectric fluid
IPC: C08G77/28
Filed: 1974-12-19
Abstract: 1454065 Nitroarylsiloxane dielectric fluid DOW CORNING CORP 19 Dec 1974 [20 Dec 1973] 54891/74 Headings C3T and C3S An electrical device, in particular a transformer or capacitor, contains as a dielectric fluid a siloxane which comprises from 1-100 mole per cent of R x R<SP>1</SP> y SiO 4-(x+y) / 2  siloxane units, where x = 1-3, y = 0-2 and x+y = 1-3, R is a nitroaryl radical containing from 6-18 carbon atoms, and R<SP>1</SP> is an alkyl, aryl, alkaryl or aralkyl radical containing up to 18 carbon atoms and from 0-99 mol per cent of R<SP>11</SP> z SiO (4-z) / 2  siloxane units, where z = 0-3 and R<SP>11</SP> has the same definition as R<SP>1</SP>. Preferably R is a nitrophenyl radical, and R<SP>1</SP> and R<SP>11</SP> are methyl radicals. The siloxane preferably has a viscosity of from 5-500 cs. at 25 C. In Example 1 a siloxane fluid (90 cs.) of the formula is prepared by the cohydrolysis of nitrophenylmethyldifluorosilane, (CH 3 ) 2 SiCl 2  and (CH 3 ) 3 SiCl in an aqueous sodium carbonate-toluene medium followed by condensation using a tetramethylguanidine catalyst. In Example 2 a trimethylsiloxy-terminated fluid composed of (CH 3 ) 2 SiO and (O 2 N-C 6 H 4 )(CH 3 )SiO units (130 cs.) is prepared by cohydrolysing (CH 3 ) 2 SiCl 2  and nitrophenylmethyldifluorosilane followed by refluxing with hexamethyldisilazane and a silanol condensation catalyst. In Examples 4 and 5 copolymers composed of (CH 3 ) 3 SiO 1/2  and (O 2 N-C 6 H 4 -)(CH 3 )SiO units are similarly prepared.
Patent GB-1432196-A (GB)
Title: Paging system receiver
IPC: H04W84/02
Filed: 1973-11-28
Abstract: 1432196 Radio signalling PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 28 Nov 1973 [1 Dec 1972] 55178/73 Heading H4L In a paging system the receivers of absent subscribers are placed in a rack and coupled to a circuit which receives the calling signals which are also broadcast, whereby signals are returned over said circuit to operate an indicator to show that a subscriber is absent if the calling signal for his receiver is transmitted. As described, the circuit is a two-wire line which also supplies power for the receivers in the rack, the returned signals being in the form of pulse-like variations of the supply current on the line which are separated by an RC network, Fig. 1 (not shown), amplified and used to operate a lamp or acoustic device. A receiver, Fig. 2, in normal use is supplied by a battery connected to terminals 30, 31, which via transistor 32 supplies the H.F. stage 33 and via transistor 34 the L.F. stage 35. The paging signal is demodulated at 33, decoded at 35 and if correct, is supplied via transistor 40 to operate a multivibrator 36 providing an audio tone for loud-speaker 37. When the receiver is in the rack it is coupled to the twowire line by terminals 43, 44, whereby via diode 45 transistor 32 is cut off and via diode 46 and transistor 42 the loud-speaker is switched off. Transistor 34 also is cut off. Power for the stage 35 is supplied via terminal 43 and transistor 47, capacitor 48 being connected so that the paging signal is blocked. The paging signal is applied via terminal 43 and transistor 49 to the stage 35. If the paging signal is the correct one transistor 40 is made conducting but transistor 42 remains cut off. The collector of transistor 40 is coupled via resistor 51 and diode 50 to terminal 43 so that when transistor 40 conducts a current variation is transferred via the two-wire line to the remote indicating device.
Patent GB-1399068-A (GB)
Title: Spinneret assembly
IPC: D01D1/06
Filed: 1973-11-29
Abstract: 1399068 Spinneret assembly E I DU PONT DE NEMOURS & CO 29 Nov 1973 [30 Nov 1972] 55485/73 Heading B5B An assembly (Fig. 1, 10) that includes a filtration cavity 12, connected to a spinneret plate 14 there being a subassembly positioned between the cavity and the plate having an enclosed channel 26 connected at one end to the cavity 12, and the other to the plate 14, the channel being in a plane parallel to the spinneret plate and containing a series of stationary mixing elements 34. The filtration cavity 12, may contain a distribution plate, 46, which receives the melt and feeds it to the enclosed channel, 26, through spaced orifices 18 connected by grooves 20 to plate 24 via the single channel 22. In an alternative arrangement shown in Fig. 2, the cavity 42 is enclosed by a plate 46 which has distribution channels 48 connecting to the enclosed channel 50 containing mixer elements 52.
Patent GB-1446090-A (GB)
Title: Heat exchanger
IPC: F24D3/08
Filed: 1973-11-29
Abstract: 1446090 Hot water systems SAUNIER DUVAL 29 Nov 1973 [14 Dec 1972] 55506/73 Heading F4A In a heat exchanger for producing domestic hot water by heat exchange with primary water coming from a boiler through an inlet 2, the heat exchanger comprises an inner vessel formed by a vertical inner cylindrical container 3 and a coaxial cylindrical outer container 10, spaced radially therefrom, the inner vessel being closed at the top and open at the bottom such that the inner cylindrical container 3 and the coaxial cylindrical outer container 10 are immersed in a tank 1 of primary water. A domestic secondary hot water pipe 13 is located in the immediate vicinity of the inner vessel and extends adjacent the upper region thereof. The primary water entering through the inlet 2 fills the tank 1 and circulates through an opening 8 in the container 3 exiting through a connection 4. The secondary water enters through the connection 6 circulating in the pipe 13 and through a coil 9 terminating in an outlet 5. In an alternative embodiment (Fig. 3) the primary water is located in a single inner cylinder 16 which is closed at its upper portion but open at its lower portion. The primary water circulates from the passage 2 towards the outlet passage 4 at the same time filling the tank 1. Secondary water enters through a duct 17 and circulates in a double helical coil 18 concentric with the container 16 before it leaves again through a duet 19.
Patent GB-1303362-A (GB)
IPC: C08L23/18
Filed: 1970-11-25
Abstract: 1303362 Polyolefin compositions MOBIL OIL CORP 25 Nov 1970 [25 Nov 1969] 56082/70 Heading C3P The invention comprises blends of (i) a butene-1/ethylene crystalline tactic copolymer containing 5 to 20 mole per cent of ethylene and (ii) a hydrocarbon oil in an amount of from 15 to 50 per cent by weight of the total copolymer and hydrocarbon oil. The hydrocarbon oils used include a butylene oligomer (M.W. 2300), a naphthenic petroleum cut (S.A.V. 1300 seconds at 100‹ F.), a propylene oligomer (M.W. 800) and a paraffinic petroleum cut (S.A.V. 47 seconds at 210‹ F.). Comparative examples 1-3 describe heat of fusion tests on polybutene- 1 homopolymer, polybutene-1 homopolymer mixed with a propylene oligomer (M.W. 800) and a butene-1 ethylene copolymer respectively. The blends are used for leather substitutes.
Patent GB-1260651-A (GB)
Title: Bulk bin for fruit and vegetables
Inventor: SAPHIR JOHN STUART HUNTER
IPC: B65D19/02
Filed: 1967-12-11
Abstract: 1,260,651. Load handling pallets. SAPHIR SONS & CO. Ltd. 29 Jan., 1969 [11 Dec., 1967], No. 56299/67. Heading B8H. A wooden box pallet for the transportation of fruit &c. comprises triangular corner posts 2 with cut-aways 4 at the lower end to receive legs 5 attached to a deck 1, itself being cut-away at 7 to accommodate the posts 2. Runners 12 are provided between the legs 5 and may have intermediate support 13. An intermediate runner 15 may also be provided. The edges of the deck 1 are cut away at 18 and the walls are formed of spaced slats to provide ventilation and a lid 20 is provided with battens 27 to locate the intermediate foot 15 of an adjacent pallet stacked thereon. In an alternative embodiment, Fig. 3 (not shown), the battens (27) are spaced to abut the feet (12).
Patent GB-1236035-A (GB)
Title: Europium activated vanadate phosphor
IPC: C09K11/82
Filed: 1968-11-27
Abstract: 1,236,035. Luminescent materials. HITACHI Ltd. 27 Nov., 1968 [27 Nov., 1967], No. 56382/68. Heading C4S. A phosphor is of formula wherein y is a variable from 0 to 1; M is Ta and/ or Nb and <x#0À015 preferably 5 x 10<SP>-4</SP>#x #3 x 10<SP>-3</SP> (e.g. 1 x 10<SP>-3</SP>, 1, 1À5 and 3 x 10<SP>-2</SP>, preferably 2 x 10<SP>-3</SP>). 0À4 to 6 atom per cent Si may be included (e.g. 0À8 but preferably 3 atom per cent). Combinations of 0À5 atom per cent of Ta and 0À5 atom per cent Nb in single phosphors are disclosed. Also specified are Y 0À84 Gd 0À16 YO 4 : Eu with 0À1 atom per cent Ta or Nb, YVO 4 : Eu with 0À1 atom per cent Nb and 0À8 atom per cent Si. In preparation, oxides may be dissolved in cone. nitric acid, ammonium vanadate dissolved in aqueous ammonia and the solutions mixed to form a precipitate. The precipitate, Ta and/or Nb pentoxide and a flux solution of sodium carbonate and vanadium pentoxide in distilled water are mixed, dried and fired at 1200 C. in air. Alternatively, oxides or compounds convertible to same on firing, are fired at from 1100 C. to 1300 C. preferably with a small amount of alkali metal vanadate, e.g. Na 3 VO 4 , NaVO 3 , K 3 VO 4 , Na 4 V 2 O 7 , KVO 3 , K 4 V 2 O 7 . Raw materials for the Ta and Nb may be the oxides, compounds convertible to same on firing, or powders or particles of Ta and/or Nb metal when the firing atmosphere is oxygen. Si may be introduced as SiO 2  particles, water glass or organosilanes (e.g. Si(OC 2 H 5 ) 4 ). Emission at 618 mÁ is disclosed and reference made to HPMV lamps.
Patent GB-1369429-A (GB)
Title: Treatment of water or aqueous systems
IPC: C08F8/00
Filed: 1970-11-30
Abstract: 1369429 Inhibiting scale formation CIBAGEIGY AG 29 Nov 1971 [30 Nov 1970] 56760/70 Heading C1C [Also in Division C7] Water is treated, to reduce its scale-forming tendencies, with 0À1-100 p.p.m. by wt. of hydrolysed polymaleic anhydride in acid or salt form, having a M.W. of 300-5000 as determined by calculation following osmometric measurement on the polymaleic anhydride before hydrolysis. The hydrolysed polymaleic anhydride may be formed in the water being treated by adding polymaleic anhydride to the water. Other additives which may be used in the water treatment are naphthalene sulphonic acid/formaldehyde condensation products, lignin sulphonates and phosphonates. The water may be used in reverse asmosis systems, desalination plants and boiler plants.
Patent GB-1202459-A (GB)
Title: A potato harvester
IPC: A01D21/04
Filed: 1968-11-29
Abstract: 1,202,459. Potato harvester. A. UNDERHAUG [trading as F. A. UNDERHAUGSFABRIK]. 29 Nov., 1968 [25 Jan., 1968], No. 56795/68. Heading A1F. A tractor mounted potato harvester comprises a share 1 and a digging wheel 2 mounted to one side of the tractor wheel 12, a rotating member 3 co-operating with the digging wheel to receive the harvester material, a deflector means 4 co-operating with the rotating member 3, an elevator belt 5, an elevator and cleaning belt 6, a sorting belt 7, a belt 15 or 17 to transfer the harvest for collection and deflector means 8 and 9 for belt to belt transfer and cleaning. The deflector means 8 and 9 may comprise an oblique shield or a conveyer, Fig. 3 (not shown), rotating in the opposite sense to the adjacent belt or a vine roll and carrier roll, Fig. 4 (not shown), rotating in mutually opposite senses. Reference has been directed by the Comptroller to Specification 1,160,579.
Patent GB-1115970-A (GB)
Title: Process for the continuous production of wort
IPC: C12C5/02
Filed: 1966-12-22
Abstract: In a process for the production of sweet brewer's wort comprising crushing kiln-dried malt, mixing the comminuted malt with water, separating from the resulting mixture the spent grains, adding hops to the liquid thus obtained, and exposing the liquid to elevated temperatures, a ground malt-water mixture, which is being produced at least quasi-continuously, is subjected continuously to centrifugal separation at least in two stages to obtain a solids fraction and a liquid fraction, the largely dehydrated solids fraction being sparged with water in controlled quantities at least in the last of the stages, the dehydrated solids are removed, the liquid obtained by the centrifugal separation is clarified and the clarified liquid is delivered to the brew kettle, particularly a single- or multi-stage continuous flow heater.  According to one embodiment, the ground malt-water mixture is delivered to a series of four heat exchangers (continuous operation) or mash tubs (quasi-continuous operation) and the temperature of the mixture is raised in the first to about 130 DEG F. for gelatinization, in the second to about 142 DEG F. for liquefaction and in the last to about 162 DEG F. for conversion of the starch.  The mash produced is then subjected to separation in two, two-stage jet centrifuges operating with counter-current extraction.  The wort obtained is then further centrifuged to achieve greater clarity. According to a further embodiment, a non-mashed mixture of water, flour of malt, coarser solids and husks, is delivered to the centrifugal stages and the liquid expressed is passed through a series combination of heat exchangers or mash tubs. Direct current or combined direct - counter current extraction techniques may be employed with the centrifugal separations.  The quantities of water delivered to each of the centrifugal stages are controlled to give the wort its final concentration prior to its entry into the brew kettle, so that concentration of the liquid therein is rendered unnecessary.
Patent GB-1329767-A (GB)
Title: Removal of transglucosidase from amyloglucosidase
IPC: C12N9/34
Filed: 1971-12-13
Abstract: 1329767 Separating transglucosidase from amyloglucosidase MILES LABORATORIES Inc 13 Dec 1971 [28 Dec 1970] 57865/71 Heading C3H A process for removing transglucosidase from amyloglucosidase comprises mixing an amyloglucosidase solution containing transglucosidase with a polyacrylic acid to form a precipitate between the polyacrylic acid and the transglucosidase and then separating the precipitate from the amyloglucosidase solution. The enzymes are obtained by cultivation of Aspergillus niger.
Patent GB-1444105-A (GB)
Title: Manufacture of soft and resilient composite polyurethane foams
IPC: C08J9/22
Filed: 1973-12-14
Abstract: 1444105 Laminates of foam plastics mixtures BASFAG 14 Dec 1973 [20 Dec 1972] 57959/73 Headings B5A and B5N [Also in Division C3] Composite foams are made by foaming in a mould a mixture of (A) foamed particles of an olefine polymer of particle size 3-50 mm. and bulk density 5-100 g./l. and (B) a foamable mixture of an organic polyisocyanate, a polyol, which preferably has a mol. wt. of 300-10,000 and is a polyether-ol having an OH number of 30-100 or is a polyester-ol having an OH number of 40-70, a catalyst, water and optionally one or more other auxiliaries for the manufacture of polyurethane foams, 30-90% of the mould being filled with particles (A) either in loose form or as agglomerates, which are fused or stuck together, and mixture (B) being introduced into the mould such that they congregate in admixture in the communicating cavities between and around the particles (A) under a pressure of 1À5-8 bars, and the mixture (B) is allowed to foam. In the examples foamed particles of polyethylene, with optionally an ethylene/vinyl acetate copolymer, are placed in a mould as loose particles, nine stacked sheets (see Example 2), or a block made by adhering the particles together with a mixture of an adipic acid/diethylene glycol polyester, castor oil, 4,4<SP>1</SP>-diphenyl methane diisocyanate, ethyl acetate and tin dioctoate, the particles having been wetted with water and n-butanol; a foamable mixture consisting of a polypropylene glycol ether, triethylene-diamine, dimethylcyclohexylamine, monofluorotrichloromethane, diphenylmethane diisocyanate and methylene chloride is then injected under pressure into the mould through 4 nozzles in the movable cover of the mould and the moulding is then allowed to foam. The mould may also be a continuously operating shaping equipment, e.g. 4 conveyer belts arranged so as to form a channel, or endless conveyer belts may carry individual moulds.
Patent GB-1407797-A (GB)
Title: Colorimeter
IPC: G01N21/25
Filed: 1971-12-15
Abstract: 1407797 Photo-electric colorimeter A R H SCHLESINGER 15 March 1973 [15 Dec 1971] 58270/71 Heading G1A [Also in Division G2] A photo-electric colorimeter uses fibre optic light guides to direct light from a source to test and reference samples. In the apparatus of Fig. 2, a halogen vapour lamp (17) Fig. 1 (not shown) is mounted in a curved, cold, dichroic mirror 16, which focuses the light via an interference filter 28, inserted through a slot (21), Fig. 1 (not shown), onto the ends of a pair of fibre optic light guides 21, 22. These conduct light to centres 12, 13 for test and reference sample test tubes or curettes, which may be of the forms illustrated in Fig. 3 (not shown). Light transmitted is conducted by further fibre optic guides 34, 35 to photo-cells 36, 37, which are heat insulated, or whose outputs are fed to an electronic comparator. A stand-by lamp 38 is switched on when measurements are over, to maintain the apparatus in readiness for operation. Two suitable curette shapes are illustrated, Fig. 3 (not shown).
Patent GB-1167760-A (GB)
Title: Improvements in and relating to Masonry Walls and Partitions and Method of Fabricating Same
Inventor: CAPUTO ARNOLD PETER
IPC: E04B2/06
Filed: 1967-12-28
Abstract: 1,167,760. Walls. INTERCON RESEARCH. Inc. 28 Dec.. 1967, No. 58882/67. Heading E1B. A wall comprises a series of apertured blocks 13 laid with their longer dimensions vertical and having interlocking tongues and groove 16, 17 in their upper and lower end surfaces, beads 15 of adhesive having a higher tensile strength than the bricks being laid between the courses and no adhesive being applied on the faces 14 between adjacent blocks in a course. The wall is laid on a concrete footing and has a coating of plaster or stucco.
Patent GB-1406331-A (GB)
Title: Device for loading bulk articles and materials
IPC: B66F9/19
Filed: 1972-12-19
Abstract: 1406331 Shovels SAN MARCO DI CERCUTTI & C SAS 19 Dec 1972 [29 Dec 1971] 58980/72 Heading E1F A loader shovel for mounting on the forks of a fork lift truck comprises a support 1 having sockets for receiving the forks 4, a shovel 7 pivoted at 6 on the support 1, and a latch mechanism for locking the shovel to the support. The latch mechanism involves a shaft 15 being carried by bearings 21 fixed to the support and having a helical spring 16 so wound about the shaft and anchored to the shaft and the support as to biass the shaft to return when it is rotated to release a detent 12 from a latch 14 secured to the shovel. Pivotal movement of the shovel relative to the support is limited by a nut-headed rod 8 pivotally mounted about the shaft 15 and slidable through a guide 10 pivotally supported on the back of the shovel. A shockabsorbing 9 is positioned about the rod 8 between the guide 10 and the nut 22 at the outer end of the rod.
Patent GB-1420706-A (GB)
Title: Structure of a tanker ship
IPC: B63B25/10
Filed: 1973-12-21
Abstract: 1420706 Tanks NIPPON KOKAN KK 21 Dec 1973 59379/73 Headings B7A and B7S A tanker, e.g. for oil, comprises a centre tank 3 formed between a deck 4, bottom 6 and  internal longitudinal bulkheads 11, the tank being strengthened by integral ring shaped transverse webs 5, 7, 10 disposed at spaced positions along the length of the tank 3. Centreline guides 8, 9 are also provided and wing tanks 1 are disposed outboard of the centre tank 3, these wing tanks being strengthened by transverse webs 2 which abut the bulkheads 11.
Patent GB-1447807-A (GB)
Title: Apparatus for half tone marking
IPC: H04N1/405
Filed: 1973-12-21
Abstract: 1447807 Copying by scanning MUIRHEAD Inc 21 Dec 1973 [5 Feb 1973] 59548/73 Heading H4F An analogue facsimile signal is added in an operational amplifier 19 to a repetitive shaped waveform, Fig. 6, the resultant signal being passed to a threshold detector 21 to derive marking pulses for application to an electrostatic recorder 27. The waveform of Fig. 6 is derived by integrating square wave pulses at 11 to derive a triangular waveform, Fig. 4, shaping this waveform at 15 to derive the waveform of Fig. 5 and adding peaks 82a to this waveform from a peaker 32. The operation of 15 causes controlled departures from linearity of the output of detector 21 with respect to the input facsimile signal.